Aspen plastics produces plastic bottles to customer order

Aspen plastics produces plastic bottles to customer order

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Aspen Plastics produces plastic bottles to customer order. The quality inspector randomly selects four bottles from the bottle machne and measures the outside diameter of the bottle neck, a critical quality dimension that determines whether the bottle cap will fit properly. The dimensions (in.) from the last six samples are BOTTLESample123410.5940.6220.5980.5920.5870.6110.5970.61330.5710.580.5950.60240.610.6150.5850.57850.580.6240.6180.61460.5850.5930.6070.569 a. Assume that only these six samples are sufficient, and use the data to determine control limits for an R- and an x-bar-chart.b. Suppose that the specification for the bottle neck diameter is 0.600 +/- 0.050 and the population standard deviation is 0.013 in. What is the Process Capability index? The Process Capability Ratio? c. If the firm is seeking four-sigma performance, is the process capable of producing the bottle?

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